Pump.



A. M. FARMER.

PUMP.

APPLICATION FILED MAP.. sa, 1914.

ALBERT l. FARMER, OF DETROIT, MCHIGAN.

'sursis' Spccca'cion of Letters Patent.

Patented Derle 29, 1914..

spammen and March 2e, 1914. serial No. 527,261.

T0022 Hmm fr' may con/:cru:

lle it known that i, Auteur lli. FARMER, a citizen olE the lnited States oi' America, residing at Detroit, in the county'ot Wayne and State of Michignn, have invented certain new and useful improvements in Pumps, of which the follovvng'is a specifi cation, reference being had therein to the accompanying drawings.

in the. operation ot' pumps ot small capacity tor use as compressors, beer pumps or the like Where thev are usually driven by electric or Water motors, it is desirable that 'they be so disposed as to operate noiselessly. it is also desirable to avoid multiulicity of Working parts as they are usually under the control of persons unskilled in the proper care of machinery.

This invention relates to a pump and to an arrangement thereof whereby direct conneetions may be made with a motor running at considerable speed together with such arrangement or" parts as to minimize the liability oi disarrangement and the necessity Jfor readjustmcnt and repairs.

The invention consists in the matters hereinciter set forth and more particularly pointed out the appended claims.

The drawing is a longitudinal section, with parts shown in elevation, of a pump that embodies features of the invention.

Referring to the,l drawing a main casing or base ll is formed and preferably integral with a horizontally disposedcylinder 9. near one end and a bearing block or pedestal 3 at the other. head #l that is suitably secured as by cap screws 5 to the cylinder, closes the outer end thereof and has an inwardly opening check valve and an outwardly extending check valve which controls respectively the intake and outlet passages through thehead.

piston 8 is reciproeable in the cylinder. tubular stein 9 is suitably secured on the outer end portion thereof concentric with a shaft- 0 that is journaled in the hearing bloclr 3. lDreierably the ball thrust bearings li between an inner liange 12 and an outer thrust ring i3 serve to reduce the friction of the shet in the bearings and to loch it from endwise movement. A yoke le is swiveled in a boss l5 in which it is retained by an annular nut '16. The. inner end portion of the yoke engages a continuous diamond thread indicated at lli on the shaft l0. A guide rod 17 fixed in the bearing cap 3 engages a lug 18 on the stem 9 to prevent rotation ofthe piston. Or other suitable means may be employed to effect this result.

is a result of this construction the rotation of the main shaft by a motor reciprocates the piston and thereby operates the pump in practically a noiseless manner. Be cause of the reduction of motion a high speed motor may be directly connected to the shaft without driving the pump at too high speed.`

It desired, the hollow piston stern may be utilized as a pump barrel in which instance an intake check valve 19 and an outlet check valve 2O are provided. A suitable passage 2l from the latter' valve is in communication with pipe sections Q2 and 23 that are linked or swiveled together and may be supported at the outer end by suitable bracket M Or other flexible discharge connections may be employed. ln this latter construction the base l is constructed with side Walls to form a Well or reservoir 26 for supplying liquid to the intake check valve 19, the latter being filled from any convenient source.

Obviously changes in the details of construction may be made Without departing from the spirit of my invention and do not care 'to limit r'nyself to any particular form or arrangement of parts. l

What I claim is:

l. in a pump, a horizontally disposed cyl.- inder having intake and outlet passages, a piston in said cylinder, a non-rotatable hollow stein carried thereby, a driven shaft erztending into said stein and provided with e continuous diamond thread, a yoke arranged upon said stem and engaging the thread of said driven shaft, and means in connection with said stein whereby thethreaded end or" said shaft and said'stem cen he utilized for pumping purposes.

2. A compound pump comprising a honi.

Zontally disposed cylinder having intake and outlet passages, a piston movable 1n said cylinder, e hollow non-rotatable stem cony nected to said piston :and constituting an In testimony whereof I ax my signature auxliary pump ylinder, drivel shaft exin presence of two witnesses. ten ing into sai stem an provi ed with a continuous diamond thread, a. yoke upon 'ALBERT M' FARMER B said stem engaging the thread of said driven Witnesses:

` shaft, and inlet and outlet connections form- ANNA M. Donk,

ing part of said stem. LEWIS E. FLANDERS. 

